PS - speaking of Petrolz, a new performance of OSCA is now on Youtube. It's live like the others, but this version seems to have more of a Petrolzy style to it (rather than sounding like the Tokyo Jihen cover).

Hahah, I tried to sign up for that site. I gave them my phone number and then I got an automated message telling me my authentication number in Korean. Time to give up.

Haha most of Korean sites are unfriendly for users outside of korea. If you don't have ID number, similar to social security number in US, you even can't sign up for most of sites. yes, time to give up.

Does who (referred to in your question as 'they') have anything where the tracks can be sampled? Who are you asking about? A Japanese reseller I have no direct correspondence with, but who might have sample clips someplace that the auction page didn't link to?

Tower.jp is the only non-reseller, and they have no samples. I'm making a leap of faith purchase - I'm not acting on a lot of information you don't have. It's effectively an EP for the lower price of a maxi-single. That's all I need to know before buying. I don't stand to lose much if I end up not enjoying the material.

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You know Tokyo Jihen is a supergroup, when you can't blame most of the members for wanting to pursue other projects.